/*=============================================================================*
 *  Copyright 2004 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *=============================================================================*/
package util.xml;

import java.util.Iterator;

/**
 * Interface for read only XML Namespace context processing.
 *
 * @author Ian Springer (ian DOT springer AT hp DOT com)
 */
public interface NamespaceContext
{
   /**
    * Get Namespace URI bound to a prefix in the current scope.
    *
    * @param prefix the prefix to resolve
    *
    * @return
    */
   String getNamespaceURI( String prefix );

   /**
    * Get prefix bound to Namespace URI in the current scope.
    *
    * @param namespaceURI
    * @return
    */
   String getPrefix( String namespaceURI );

   /**
    * Get all prefixes bound to a Namespace URI in the current scope.
    *
    * @param namespaceURI
    * @return
    */
   Iterator getPrefixes( String namespaceURI );
}